Densities, viscosities, and refractive indices of some alkyl esters with 4-chlorotoluene systems at (293.15, 298.15, and 303.15) K

Densities, viscosities, and refractive indices have been measured for 4-chlorotoluene + methyl acetate, +ethyl acetate, and +propyl acetate at (293.15, 298.15, and 303.15) K. The results are correlated by ] means of a Redlich-Kister type equation and discussed in terms of molecular interactions. Excess volumes have been derived

Ultrasonic studies of liquid mixtures of either water or dimethylsulfoxide with ethylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, 1,2-propylene glycol and 1,4-butylene glycol at 298.15 K

Densities (ρ), speeds of sound (u), and isentropic compressibilities (kS) of binary liquid mixtures of either water or dimethylsulfoxide (DMSO) with ethylene glycol (EG), diethylene glycol (DEG), triethylene glycol (TrEG), tetraethylene glycol (TetrEG), 1,2-propylene glycol (PG), and 1,4-butylene glycol (BG) were measured over the entire composition range at 298.15 K. The excess molar volumes (VE), the deviations in speed of sound (uE) and the deviations in isentropic compressibility (KEs) were determined. The experimental VE, uE and KEs values were fitted to the Redlich-Kister polynomial equation, and the Ak coefficients as well as the standard deviations (d) between the calculated and experimental values were derived. The results provide information concerning the specific interactions between unlike molecules in the binary mixtures.© 2009 Taylor & Francis

Excess Volumes of Ethyl Acetate + Toluene, + o-Chlorotoluene, and + p-Chlorotoluene from 283.15 to 303.15 K

Excess volumes (VE) of binary mixtures of ethyl acetate with toluene and its o- and p-chloro derivatives have been determined from density measurements from 283.15 to 303.15 K over the entire composition range. Excess volumes are negative for all mixtures at all temperatures. The VE values are close to zero for the ethyl acetate + toluene system. The values decrease in the order toluene, o-chlorotoluene, and p-chlorotoluene. The effect of temperature on the excess volume is (∂VE/∂T)p, being generally negative. © 1995, American Chemical Society. All rights reserved

Densities and viscosities of 1-pentanol binary mixtures at 293.15 K

Densities (ρ) and viscosities (η) for binary mixtures of 1-pentanol with benzene, chlorobenzene, bromobenzene, iodobenzene, nitrobenzene, aniline, toluene, and p-xylene have been measured over the whole composition range at 293.15 K. The excess volumes VE and the viscosity deviations Δη were calculated, and the results were fitted to a Redlich-Kister type polynomial relation. The corresponding parameters have been derived. The resulting excess functions were interpreted in terms of the interactions between the molecules in the binary mixtures

Densities, viscosities, refractive indices, and surface tensions of dimethyl sulfoxide + butyl acetate mixtures at (293.15, 303.15, and 313.15) K

Densities (ρ), viscosities (η), refractive indices (nD), and surface tensions (σ) have been measured for dimethyl sulfoxide + butyl acetate mixtures, over the entire composition range at (293.15, 303.15, and 313.15) K. The excess volumes (VE), the viscosity deviations (Δη), and the deviations in refraction (ΔR) were calculated from these experimental data. All the properties have negative values. The results have been fitted to the Redlich-Kister type polynomial relation, and the corresponding parameters have been derived. The results are discussed in terms of molecular interactions